gall wasp vs gallfly

gall wasp and gallfly both are nouns.

Word	Noun	Adjective	Verb	Adverb
gall wasp	Yes	No	No	No
gallfly	Yes	No	No	No

As nouns, gall wasp and gallfly are synonyms defined as:

gall wasp and gallfly: small solitary wasp that produces galls on oaks and other plants

Other synonyms of gall wasp include cynipid gall wasp, cynipid wasp.

gall wasp (noun)	gallfly (noun)
small solitary wasp that produces galls on oaks and other plants	any of various insects that deposit their eggs in plants causing galls in which the larvae feed
	small solitary wasp that produces galls on oaks and other plants
	fragile mosquito-like flies that produce galls on plants